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Methods and apparatus for randomly distributing traffic in a multi-path switch fabric

專利號
US10097479B1
公開日期
2018-10-09
申請人
Juniper Networks, Inc.（US CA Sunnyvale）
發(fā)明人
Philip A. Thomas; Sarin Thomas; Jean-Marc Frailong; Pradeep Sindhu
IPC分類
H04L12/947; H04L12/707; H04L12/935
技術領域
egress,switch,indicator,module,schedule,status,fabric,stage,data,port
地域： CA CA Sunnyvale

摘要

In some embodiments, an apparatus comprises a schedule module within a switch fabric system. At a first time, the schedule module is configured to access a list of status indicators associated with a group of egress port indicators. The list of status indicators includes a set of status indicators each of which has a value greater than a threshold. The schedule module is configured to randomly select a status indicator from the set of status indicators and configured to reduce the value of the selected status indicator. The schedule module is then configured to send the egress port indicator associated with the selected status indicator such that a data cell is sent from an egress port associated with that egress port indicator. At a second time, when the value of every status indicator from the list of status indicators is not greater than the threshold, the schedule module is configured to increase the value of every status indicator above the threshold.

說明書

In use, a data packet (e.g., an Ethernet packet) can be sent between peripheral processing devices 111-116 via portions of the switch fabric system 100. For example, as shown in FIG. 1, a data packet can be sent from a first peripheral processing device 113 to a second peripheral processing device 115 via path 170. The first peripheral processing device 113 can send the data packet to the edge device 181 via link 192. The edge device 181 can then prepare the data packet to enter the switch fabric 110 by disassembling the data packet into multiple data cells, which are then sent by the edge device 181 to the switch fabric 110 via link 193. The switch modules within the switch fabric 110 can route the data cells through the switch fabric 110 via one or more of the multiple paths within the switch fabric 110. The data cells are sent to the edge device 183 via link 194. The edge device 183 can reassemble the data cells into a data packet that is identical (or substantially identical) to the original data packet and then send the data packet to the second peripheral processing device 115 via link 195.

權利要求

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